Sewing-machine



( No Mbdel.)

J. TRIPP.

SEWING MACHINE. No; 282,406. Patented July 31, 1883.

711111111111 Fzly] WITNESSES I INVENTOR .ATT RNEYa UNITED STATES PATENTOFFICE. 4

JAMES TRIPP, OF NEW YORK, N. Y., ASS'IGNOR TO CHARLES T. BEOIIWVITH AAND ELLEN F. BEOKWITH, BOTH OF OBERLIN, OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 282,406, dated July 31,1883.

' Application filedDeceniber 12,1882. (No model.)

To all whom it may concern.-

Be it known that I, JAMES TRIPP, a citizen of the United States,residing in the city,

. county, and State of New York, have invented certain new and usefulImprovements in Sewing-Machines, of which the following isaspecification.

- My invention relates to improvements in the construction and means ofsupporting what is commonly known as the f shuttle-lever connection. e

The nature of my invention will be fully explained by reference to theaccompanying specification and the drawings annexed, which form part ofthe same.

Referring to the drawings, Figure 1 is a ver-' tical section of the rearend of a sewing-machine arm and post. Fig. 2 is a vertical cen-' tralsection of a shuttle-lever connection conis a front view of the same.

modification of my invention.

arranged at right angles to each other.

Arepresents part of the main casting forming the rear end of asewing-machine and post, A. I

B is the main shaft, which is provided with the necessary cams andeccentrics.

C is my improved shuttle-lever connection,

which, as shown by the drawings, is con structed with a compound pivotedbearing, D,

by means of which I am enabled to support the shuttle-lever connection 0securely and accurately in position with great facility and at a largelyreduced cost. The compound bearing D is constructed of two shafts, D DThe shaft D is arranged verticallyand in the arrangement shown by Figs.1 to 5, inclusive, is formed with a' conical end, (1, adapted to lowerend of an opening, 0, formed in the shuttle-lever connection .0, whileat its upper end, d, it is formed with a conical recess, d, adapted toreceive the end of a pivoting-screw, d supported in a cross-piece, c, 5forming part of the shuttle-connection G. The shaft D in the arrangementshown by Figs. 1 to 5 is supported in position with the post A by meansof centering-screws E E, 1 formed with conical ends 6 6, adapted to bereceived within correspondingly-formed bearings d (1* in the ends of theshaft D By means of my improved compound pivoted bearing D, I am enabledto obtain an aufork of the shuttle-lever connection 0 in relation totheir operating-cam with great precision and nicety.

In Figs. 6 to 17, inclusive, I have shown slight modifications in themode of construct 7o ing the compound pivoting bearing D. In Figs. 6 and7 the shaftsD and D are shown provided with conical recessesin theirends, adapted to receive the ends of correspondingly-formedbearing-screws. In Figs. 8 and 9 a central screw-pin is shown passingcentrally through the shaft D for the purpose of holding the same inposition, while in Figs..10 and 11 the shaft D is provided with aninternal shaft formed with conical recesses at each end adapt ed toreceive the conical ends of correspondingly-formed pivoting pieces, asshown. In Figs. 12 and 13 I have shown the shaftD provided with aninternal central shaft in which the conical recesses are formed for thereception 8 5 of the ends of the centering-screws E E. In Figs. 14: and15 I have shown the shaft D provided with a central shaft provided atone end with'a conical bearing-point adapted to be received in asuitablebearing in the casting A, while'its opposite end is adapted to beheld inposition by a centering-screw E. Figs 16 and 17 show a similar mode ofsupporting the shaft D in position.

be received into a corresponding seat in the 50 tomatic adjustment ofthe surfaces 0 c of the 65 p Having thus described my invention, whatcentered in the shntt1e-1ever connectionO, sub- I claim, and desire tosecure by Letters Patent, stantially as and for the purpose described.IO

1S, In witness whereof I have hereunto set my The combination, with ashuttle-lever c011- hand this 7th day of December, A. D. 1882. 5nection, of a compound bearing-piece, D, JAMES TRIPP.

formed with a shaft, D, capable of being een- Vitnesses: tered in asewing-machine frame, and a shaft, 1VIAX BAYERSDORFER,

D", formed at right angles to the shaft D, and WVM. E. RICHARDS.

